Tambour-frame.



G. SIEBER.

TAMBOUR FRAME.

APPLICATION FILED DEC. 1, 1915.

UNITED STATES PATENT QFFICE.

GOTTWALT SIEBER, or PLAUEN, GEE/MANY, ASSIGNOLR. ro voGTLAnDIscHE MAsoHI vEN ABRIK, 10F 'PLAUEN, GERMANY.

TAMBOUR-FRAME.

Specification of Letters Patent.

Substitute for application Serial No. 843,460, filed June 6, 1914. This application filed December 1, 1915.

Serial No. 64;587.

To all whom it may concern:

Be it known that I, GOTTWALT SIEBER, a subject of the German Emperor, residing at Plauen, in Vogtland, in the Kingdom of Saxony, Germany, have invented certain new and useful Improvements in Tambour- Frames, of which the following is a specification.

The present invention relates to tambour frames and has for its object to provide a construction which will render the frame more stable and rigid than the hitherto used structures. 7

It is well known that with the hitherto used structures the tambour frame is more or less flexible, so that with long machines, as for instance 12 to 14 yd. machines, it has the tendency to become distorted from its rectangular shape. To obviate these drawbacks various improvements have been introduced. Thus, for instance, the longitudinal parts of the frame have been made of reinforced U-shaped or angle iron. But such structures have not entirely avoided the above named defects and have increased the weight of the frame.

My invention will be more fully understood by reference to the accompanying drawing in which similar reference letters denote corresponding parts and in which an elevation of the improved part of the tambour frame is illustrated.

and at intermediate points are reinforced by pipe sections Land cross wires 5, thus havin the form of a beam truss.

n the present embodiment of my invention thev reinforcing pipe sections 4 are screwed or otherwise fixed in head pieces 6 mounted on the opposite girdles l and 2, and the cross wires 5 are fixed to the said head pieces 6.

What I claim and desire to secure by Letters Patentis:

In a tambour frame, the combination with end parts or members and fabric supporting means borne in-the latter, of a longitudinalpart, composed of upper and lower tubular steel girdles connected to said members and vertically tubular posts extending between said girdles and diagonal tensioning wires connecting adjacent posts.

In testimony whereof I affix my signature in presence of two witnesses.

GOTTWALT SIEBER.

- Witnesses J OSEF GUENZ, -ROBER'1 H; NIER.

copies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents,

Washington, D. 0. 

